I would like to switch over to vacuum brakes on my 1988 jag without buying the kit, has anyone done this mod and what problems did you have. Thanks

 

Hello, and welcome. I haven't done this myself, but I know I saw a thread about it sometime ago- maybe a year or so. I believe he was using a booster from a series 3 xj. If you use the search forum button to the right of the forum header you should be able to find it fairly easily. Good luck.

 

I found these instructions.